JPH01248218A - Power source turning-on device - Google Patents

Abstract

PURPOSE:To automatically re-raise an electronic computer system which has stopped due to a power failure by issuing a power source turning-on instruction when the electronic computer system has stopped due to the power failure, and raising automatically the computer system. CONSTITUTION:A power source turning-on device 103 resets a power failure detecting circuit 104 by following up reset of a stop signal 106. Also, when an electronic computer system 101 does not stop due to a hit, the stop signal 106 is not detected, therefore, a power source turning-on instruction 107 is not issued. In such a case, a power failure detecting signal 105 is reset after a prescribed time. Even when the electronic computer system 101 has stopped due to other reason than the power failure, the signal 105 is not set, therefore, the power source turning-on instruction 107 is not issued, and the electronic computer system 101 goes to a stop state. In such a way, only a stop of the electronic computer system 101 caused by the power failure is detected, and after the restoration of power failure, the computer system 101 can be re-raised automatically.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a system for automatically starting up a power supply when an unmanned computer system is stopped due to a power outage. Regarding the method.

[Conventional technology]

Japanese Patent Laid-Open No. 62-26522 discloses a method for preventing malfunctions caused by instantaneous power outages by monitoring the entire elapsed time from the time a power outage is detected and completely suppressing the output of power-on signals at the time of power restoration until a predetermined period of time has elapsed. A technique to prevent this is shown.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, in the case of a momentary power failure, the computer cannot be restarted for a certain period of time, regardless of whether the computer system has stopped or not.

It is an object of the present invention to solve the problems of the above-mentioned prior art, and to solve the problem of computer systems that have stopped due to power outages including instantaneous power outages. ,
It will restart automatically.

[Means to solve the problem]

The above object can be achieved by adding an operation detection means and a power failure detection circuit of the computer system, for example, between the distribution board and the computer system.

When a momentary power outage occurs, the electronic meter 11 is activated at the same time as the power outage is detected.
detect the operating status of the machine system. When the computer system is stopped, a power-on command is issued to the computer system to restart it.

[Effect]

A power-on command to the computer system is issued upon detecting the operating status of the computer system at the same time as the power failure is detected. As a result, if the slave computer system is stopped due to a reason other than a power outage, a power-on command is not issued because the power outage is not detected (case 1). Further, even if a power outage is detected, a power-on command is not issued even if the computer system does not stop (case 2). If such control is implemented, there is a possibility that the detection result of a computer system stoppage will be held unnecessarily in the case 1 above, and the detection result of a sunny power outage in the case 2 may be held unnecessarily. Therefore, this detection mechanism resets after a certain period of time and prepares for future power outages.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1. An electronic computer system 101 operates on a commercial power source 102. If the commercial power supply 102 has a power outage, the power outage detection port w
At 3104, all power outages including instantaneous power outages are detected.

The power failure detection circuit 104 itself, including instantaneous power failures, is well known in the prior art and will not be described in detail here.

The electronic computer system 101 indicates the operating status using a stop signal 10.
6 to the power-on device 106. The power-on device 103 issues a power-on command 107 to the computer system 101 when both the power failure detection signal 105 and the stop signal 106 are detected.

The electronic computer system 101 restarts the system in response to the 'backward source input command 107'. At the same time, the stop signal 106 is also reset.

The power supply device U103 resets the power failure detection circuit 104 in response to the reset of the stop signal 106. Further, if the rt child computer system 101 does not stop due to an instantaneous power failure, the stop signal 106 is not detected, so the power-on command 107
is not published. In this case, the power outage detection signal 105 is
Reset after a certain period of time. Even if the computer system 101 is stopped due to reasons other than a power outage, the power-on command 107 is not issued because the power outage detection signal 105 is not set, and the computer system 101 is in a stopped state. In this way, only the stoppage of the computer system 101 due to a power outage can be detected, and the computer system 101 can be automatically restarted after the power is restored.

〔Effect of the invention〕

According to the present invention, an electronic computer system during unmanned operation,
Even if the computer system stops due to a momentary power outage or power outage, it can be automatically restarted when power is restored, which has the effect of increasing the operating rate of the computer system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 101... Computer system, 102... Commercial power supply, 105... Power supply device, 104... Power outage detection circuit, 105... Power outage detection signal, 106...
- Stop signal, 107...Power on command. Representative Patent Attorney Katsutoshi Ogawa 1st Nagi

Claims (1)

[Claims] 1. Computer systems that stopped due to commercial power outages,
A power-on device that automatically starts up after power is restored has a means for monitoring a power outage, a means for detecting that a computer system has stopped due to a power outage, and a means for detecting a computer system failure when the computer system has stopped due to a power outage. A power-on device comprising means for automatically starting up the computer system by issuing a power-on command.